William b



(No Model.) 5 W. B. LEE.

PLOW OR UULTIVATOR TOOTH.

Patented Sept. 19, 1893.-

I/i/g/ a fnveivi'or UNITED STATES PATENT OFFICE.-

WILLIAM B. LEE, OF OZARK, MISSOURI, ASSIGNOR OF ONE-HALF TO DAVID WOLFFAND ZACI-IARIAH A.

JOHNSON, OF SAMFI PLACE.

SPECIFICATION forming part of Letters Patent No. 505,425, datedSeptember 19, 1893.

Application filed June 29, 1893.

To aZZ whom it may concern:

Be it known that I, WILLfAM B. LEE, a citizen of the United States,residing at Ozark, in the countyof Christian and State of Missouri, haveinvented certain new and useful Improvements in Plow or CultivatorTeeth; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to the means of securing cultivator and plow pointsto their beams or standards and particularly to that class used forcultivating purposes.

My invention consists in forming in the point a tapering, dove-tailslot, or socket, and in forming the depending portion of the standard intriangular form in cross section, and tapering from the beam portiontoward the toe, whereby the point will be wedged and firmly held on thestandard against accidental displacement, while being adapted to bereadily removed for repair or renewal.

It further consists in soforming the slot, or socket, and the toe of thebeam that the point will be held securely in place without the use ofbolts or other fastening devices whereby the weakening of the parts isprevented, and in certain other details in the construction of parts,all as hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation of the beam,showing the point connected therewith. Fig. 2 is a vertical,longitudinal section of the tooth. Fig. 3 is a transverse section on theline w m Fig. 1. F g. 4 is a side elevation of the beam. Fig. 5 1s across section of the beam point or toe.

The horizontal portion of the beam, A, may be constructed in any usualor preferred manner and so as to be connected to any form of walking orsulky plow or cultivator. The depending, or toe portion of the beamcurves forward with its front face made flat as shown at o, and with therear portion in angle form as shown at Z2, with a rounding face at thepoint of angle, as shown at b, for a purpose hereinafter explained, thepoints of angle converging toward each other and meeting atthe point.The plow point or tooth, B, is preferably forged from a single piece ofsteel and the central rear portion is thickened out $erial No. 479,152.(No model.)

into ribs d, forming a dove-tail slot or groove,

01. These ribs are made thick at the top of the tooth and taper incurved form toward the point, converging in gradual lines into andforming a continuation of the rear face of the point, withthe slotopening outward. The toe of the beam is made of greater thickness thanthe depth of the groove so that its rear curved face 1) extends outthrough the slot, and the side faces of the ribs are made in concaveform so as to form gradual curved lines or faces, and in such mannerthat no abrupt angles are presented to the ground. By forming the socketup in the form of ribs on the rear face of the point it will be seenthat the same will be greatly strengthened without increasing the costof manufacture, and by forming the parts or gradual curves, asdescribed, it will be seen that no sharp angles are formed to catch inroots, stones or other hard substances. It will also be seen that bythis construction the usual bolts or set screws are dispensed with andthat the working action of the device tends to tighten and hold theparts more firmly united. It will thus be seen that by my improvedconstruction, instead of the parts becoming loose by use, the action ofsuch use, as above stated, tends to keep the parts always firmlyconnected. This, in practice, has been found Very desirable, as wherebolt-s or other fastening devices are employed they soon become loose bywear, and after they have been used for a short time they become sorusty that it is impossible to tighten them up; or when it was foundnecessary to remove the bolts to substitute new ones, special tools wererequired, it being often found necessary to cut off the heads or endsbefore being able to remove the bolts at all.

By my construction no tools are necessary for applying or removing thetooth for any purpose andas will be seen the parts are always firmlyconnected.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The shovel or point, having the ribs or flanges on the rear face madethick at the top [00 of the tooth and tapering in curved form toward thepoint, and converging in gradual rear face of the point, with a dovetailsocket presence of two Witnesses. or groove between the ribs, incombination WILLIAM LEE lines'into and forming a continuation of the Intestimony whereof I affix my signature in with the toe or standard pointmade in tri- 5 angular form to fit the socket or groove, and Witnesses:

forming with the flanges of the tooth a N. R. JOHNSON,

strengthening rib, substantially as set forth. I GEO. B. GIDEON.

